CN103776196B - A kind of solar energy heating and radiation refrigeration integrated application device - Google Patents

A kind of solar energy heating and radiation refrigeration integrated application device Download PDF

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Publication number
CN103776196B
CN103776196B CN201410063786.1A CN201410063786A CN103776196B CN 103776196 B CN103776196 B CN 103776196B CN 201410063786 A CN201410063786 A CN 201410063786A CN 103776196 B CN103776196 B CN 103776196B
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China
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radiation refrigeration
radiation
film
solar
solar energy
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CN201410063786.1A
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Chinese (zh)
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CN103776196A (en
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裴刚
胡名科
郑仁春
季杰
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中国科学技术大学
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Abstract

Patent of the present invention relates to a kind of solar energy heating and radiation refrigeration integrated application device.Comprise the uncovered casing of end face, collecting plate, radiation refrigeration film, air flow channel, copper pipe, inlet and outlet, intake-outlet; Described tank material is insulation material, and casing open-mouth is provided with all band high permeability material membrane; Collecting plate scribbles solar selectively absorbing coating, and the absorptivity in the solar radiation wave band of 0.2 ~ 3 μm is 90 ~ 95%; The emissivity of radiation refrigeration film in the atmospheric window wave band of 8 ~ 13 μm is 80 ~ 90%, and is 70 ~ 90% in the transmitance of its all band; The present invention can daytime hot water preparing and hot-air, cold air can be produced night again, efficiently solve the limitation of traditional flat-plate solar collector and radiation cooling device function singleness, improve the utilization ratio of Installation and Architecture thing roof unit are.

Description

A kind of solar energy heating and radiation refrigeration integrated application device

Technical field

The invention belongs to the field of energy utilization technology, be specifically related to the integrated application of solar energy heating and radiation refrigeration.

Background technology

At present, it is solar energy heating technology that Chinese scholars is studied more to Solar use, and flat plate solar collector is the most basic a kind of type in solar heat collector, its structure is simple, reliable, cost-effective, also having the features such as bearing capacity is strong, collector area is large, is one of heat collector type of solar energy and Integration of building optimal selection.On the other hand, the research of Chinese scholars to radiation refrigeration technology is started late, and is in progress also relatively slow.So-called radiation refrigeration refers to that ground object is carried out radiation heat transfer by 8 ~ 13 mu m wavebands of one of " atmospheric window " and the very low outer space of temperature thus reached certain refrigeration.Radiation refrigeration has the advantages such as zero power consumption, no pollution, movement-less part, has positive effect to building air-conditioning cooling energy-saving and environmental protection.

Although solar energy heating technology is very ripe, due to the impact alternated round the clock, solar thermal collector is often in idle state at night, and this greatly reduces its service efficiency; On the other hand, radiation refrigeration also has function singleness, refrigeration work consumption large not, there is certain upper limit, cause installation cost higher, and radiation cooling device is difficult to realize the defects such as refrigeration by day, because plate solar collector or radiation cooling device are often arranged in the building roof of limited area, this also greatly reduces the utilization ratio of roof unit are.

Summary of the invention

In order to make up plate solar collector and radiation cooling device limitation separately, the present invention in conjunction with both features, propose a kind of can meet simultaneously daytime thermal-arrest and evening refrigeration solar energy heating and radiation refrigeration integrated application device.

A kind of solar energy heating and radiation refrigeration integrated application device comprise the uncovered casing of end face, the uniform arrangement of casing inner bottom part is provided with metal tube, the two ends of every root metal tube are communicated with collector respectively, one end of two collectors extends the outside of casing respectively, the overhanging end of a collector is water inlet, and the overhanging end of another root collector is delivery port; The metal tube of uniform arrangement is provided with collecting plate, and in the casing above collecting plate, middle part is provided with radiation refrigeration film, and the open-mouth of the casing above radiation refrigeration film is provided with all band high permeability material membrane; Cavity between described collecting plate and radiation refrigeration film forms air flow channel, and one end of air flow channel is air inlet, and the other end is air outlet, and described air inlet and air outlet are through to be respectively positioned on the sidewall of casing.

Described tank material is insulation material, and described insulation material is mineral wool or mineral wool.

Described metal tube is copper pipe.

Collecting plate one side corresponding with radiation refrigeration film is provided with solar selectively absorbing coating, and it is 90 ~ 95% in the absorptivity of the solar radiation wave band of 0.2 ~ 3 μm.

Described solar selectively absorbing coating material is cermet plated film band or black chrome coating.

Described radiation refrigeration thin-film material is PETG (PET) film or polyvinyl fluoride thin film, and the emissivity in the atmospheric window wave band of 8 ~ 13 μm is 80 ~ 90%, is 70 ~ 90% in the transmitance of its all band.

Described all band high permeability material membrane is polyethylene film, is greater than 80% in the transmitance of 0 ~ 25 mu m waveband, is wherein 85 ~ 90% in the transmitance of the solar radiation wave band of 0.2 ~ 3 μm and the atmospheric window wave band of 8 ~ 13 μm.

Advantageous Effects of the present invention embodies in the following areas:

1. by setting up all band high permeability material membrane, 85 ~ 90% are reached in the transmitance of the solar radiation wave band of 0.2 ~ 3 μm and the atmospheric window wave band of 8 ~ 13 μm, most of solar radiation can be made so by day to project on collecting plate through all band high permeability material membrane, the heat of radiation refrigeration thin film radiation can be made effectively to be dispersed in the outer space through all band high permeability material membrane at night again, in addition, the existence of all band high permeability material membrane can also reduce radiation refrigeration film and the heat convection between collecting plate and external environment effectively;

2. by setting up radiation refrigeration film, in the atmospheric window wave band of 8 ~ 13 μm, there is higher emissivity, and in its all band, particularly in the solar radiation wave band of 0.2 ~ 3 μm, there is higher transmitance, this characteristic makes most solar radiation by day can project on collecting plate through after radiation refrigeration film, and utilizes the outside irradiation space heat of its emissivity higher in 8 ~ 13 mu m wavebands to freeze at night;

3. collecting plate front scribbles solar selectively absorbing coating, it is 90 ~ 95% in the absorptivity of the solar radiation wave band of 0.2 ~ 3 μm, and at its all band, there is very low emissivity, utilize this feature of solar selectively absorbing coating, the solar radiant energy that the overwhelming majority can be made to project on collecting plate is absorbed, greatly reduce collecting plate by infrared band to external radiation dissipated heat simultaneously, the collecting plate back side is welded with copper pipe, recirculated water, by after heat that wherein to take away collecting plate and absorb, enters attemperater;

4. the cavity between collecting plate and radiation refrigeration film forms air flow channel, and when daytime produces hot-air, cold air, by being heated after the heat of air flow channel absorb set hot plate, becomes hot-air, for rooms or article drying etc.; Night is when producing cold air, and hot-air is cooled after radiation refrigeration film transfer heat by air flow channel, becomes cold air, for room cooling or vegetables and fruits fresh-keeping etc.

In sum, solar energy heating of the present invention-radiation refrigeration integrated application device can daytime hot water preparing and hot-air, cold air can be produced again at night, efficiently solve traditional flat-plate solar collector and hot water preparing, radiation cooling device can only can only carry out the limitation of the function singleness of freezing at night, overcome round the clock alternate and seasonal variations on the impact of utilization ratio of device, and improve the utilization ratio of building roof unit are, widen the application of solar energy heating technology and radiation refrigeration technology, there is great promotional value.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is the partial enlarged drawing of Fig. 1.

Fig. 3 is the cross-sectional figure of Fig. 1.

Sequence number in upper figure: water inlet 1, delivery port 2, air inlet 3, air outlet 4, copper pipe 5, collector 6, casing 7, all band high permeability material membrane 8, radiation refrigeration film 9, collecting plate 10, air flow channel 11.

Detailed description of the invention

Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.

Embodiment 1

See Fig. 1, a kind of solar energy heating and radiation refrigeration integrated application device comprise the uncovered casing of end face 7, and casing 7 material is the insulation material of mineral wool.The uniform arrangement of casing 7 inner bottom part is installed with one group of copper pipe 5, and one end that the two ends of every root copper pipe 5 are communicated with collector 6, two collectors 6 respectively extends the outside of casing 7 respectively, and the overhanging end of a collector 6 is water inlet 1, and the overhanging end of another root collector 6 is delivery port 2.See Fig. 2 and Fig. 3, the copper pipe 5 of uniform arrangement is provided with collecting plate 10, collecting plate 10 one side corresponding with radiation refrigeration film 9 is provided with cermet plated film band, and cermet plated film band is 90 ~ 95% in the absorptivity of the solar radiation wave band of 0.2 ~ 3 μm.In casing 7 above collecting plate 10, middle part is provided with radiation refrigeration film 9, radiation refrigeration film 9 material is polyvinyl fluoride thin film, the emissivity of polyvinyl fluoride thin film in the atmospheric window wave band of 8 ~ 13 μm is 80 ~ 90%, is 70 ~ 90% in the transmitance of its all band.The open-mouth of the casing above radiation refrigeration film 9 is provided with all band high permeability material membrane 8, all band high permeability material membrane 8 is polyethylene film, polyethylene film is greater than 80% in the transmitance of 0 ~ 25 mu m waveband, is wherein 85 ~ 90% in the transmitance of the solar radiation wave band of 0.2 ~ 3 μm and the atmospheric window wave band of 8 ~ 13 μm.Cavity between collecting plate 10 and radiation refrigeration film 9 forms air flow channel 11, and one end of air flow channel 11 is air inlet 3, and the other end is air outlet 4, and air inlet 3 and air outlet 4 are respectively on the through sidewall being positioned at casing 7.

By day during hot water preparing pattern, air inlet 3 and air outlet 4 are closed, water inlet 1 and delivery port 2 open-minded, cold water in attemperater is flowed into by water inlet 1, the heat that collecting plate 10 absorbs taken away by copper pipe 5 through collecting plate 10 back side, then flows in attemperater by delivery port 2, completes a circulation.

When producing hot-air by day, water inlet 1 and delivery port 2 are closed, air inlet 3 and air outlet 4 open-minded, cold air enters air flow channel 11 by air inlet 3, in air flow channel 11, the heat of absorb set hot plate 10 becomes hot-air, then flowed out by air outlet 4, the hot-air obtained can be used for the drying etc. of rooms or article.

When producing cold air night, water inlet 1 and delivery port 2 are closed, air inlet 3 and air outlet 4 open-minded, hot-air enters air flow channel 11 by air inlet 3, cold air is become transfer heat to radiation refrigeration film 9 in air flow channel 11 after, radiation refrigeration film 9 by the mode of radiation refrigeration by heat radiation to the outer space, the air after cooled is flowed out by air outlet 4, the cold air obtained can be used for room cooling or vegetables and fruits fresh-keeping etc.

Embodiment 2

Casing 7 material is mineral wool; Collecting plate 10 one side corresponding with radiation refrigeration film 9 is provided with black chrome coating; Radiation refrigeration film 9 material is PETG (PET) film.

Other structure is with embodiment 1.

Claims (7)

1. a solar energy heating and radiation refrigeration integrated application device, it is characterized in that: comprise the casing that end face is uncovered, the uniform arrangement of casing inner bottom part is provided with metal tube, the two ends of every root metal tube are communicated with collector respectively, one end of two collectors extends the outside of casing respectively, the overhanging end of a collector is water inlet, and the overhanging end of another root collector is delivery port; The metal tube of uniform arrangement is provided with collecting plate, and in the casing above collecting plate, middle part is provided with radiation refrigeration film, and the open-mouth of the casing above radiation refrigeration film is provided with all band high permeability material membrane; Cavity between described collecting plate and radiation refrigeration film forms air flow channel, and one end of air flow channel is air inlet, and the other end is air outlet, and described air inlet and air outlet are through to be respectively positioned on the sidewall of casing.
2. a kind of solar energy heating according to claim 1 and radiation refrigeration integrated application device, it is characterized in that: described tank material is insulation material, described insulation material is mineral wool or mineral wool.
3. a kind of solar energy heating according to claim 1 and radiation refrigeration integrated application device, is characterized in that: described metal tube is copper pipe.
4. a kind of solar energy heating according to claim 1 and radiation refrigeration integrated application device, it is characterized in that: collecting plate one side corresponding with radiation refrigeration film is provided with solar selectively absorbing coating, it is 90 ~ 95% in the absorptivity of the solar radiation wave band of 0.2 ~ 3 μm.
5. a kind of solar energy heating according to claim 4 and radiation refrigeration integrated application device, is characterized in that: described solar selectively absorbing coating material is cermet plated film band or black chrome coating.
6. a kind of solar energy heating according to claim 1 and radiation refrigeration integrated application device, it is characterized in that: described radiation refrigeration thin-film material is PETG (PET) film or polyvinyl fluoride thin film, emissivity in the atmospheric window wave band of 8 ~ 13 μm is 80 ~ 90%, is 70 ~ 90% in the transmitance of its all band.
7. a kind of solar energy heating according to claim 1 and radiation refrigeration integrated application device, it is characterized in that: described all band high permeability material membrane is polyethylene film, being greater than 80% in the transmitance of 0 ~ 25 mu m waveband, is wherein 85 ~ 90% in the transmitance of the solar radiation wave band of 0.2 ~ 3 μm and the atmospheric window wave band of 8 ~ 13 μm.
CN201410063786.1A 2014-02-25 2014-02-25 A kind of solar energy heating and radiation refrigeration integrated application device CN103776196B (en)

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CN105241081B (en) * 2015-11-03 2017-08-29 广东五星太阳能股份有限公司 Composite parabolic optically focused collection radiator with thermal-arrest on daytime and nocturnal radiation refrigerating function
CN105245184B (en) * 2015-11-03 2017-09-19 广东五星太阳能股份有限公司 Plate photovoltaic photo-thermal comprehensive utilization device with nocturnal radiation refrigerating function
CN105957912B (en) * 2016-07-01 2017-08-29 中国科学技术大学 A kind of multi-functional spectral selection encapsulating material
CN107936389A (en) * 2017-11-10 2018-04-20 新奥科技发展有限公司 A kind of composite membrane and preparation method thereof

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US4224803A (en) * 1978-11-07 1980-09-30 Leonard Greiner Chemical heat pump
CN203100286U (en) * 2013-01-25 2013-07-31 长沙鹞翔科技有限公司 Solar energy and air energy double-energy heat source tower
CN103287014B (en) * 2013-06-27 2015-05-13 裴刚 Selective absorption emission composite material meeting requirements of solar heat collection and radiation refrigeration
CN103486760B (en) * 2013-10-21 2015-06-17 中国科学技术大学 Solar heat collection-radiation refrigeration integration device
CN203771777U (en) * 2014-02-25 2014-08-13 中国科学技术大学 Solar heat collection and radiation refrigeration comprehensive application device

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